Summary of Significant Accounting Policies (Details 2) (USD $)	1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended
	Oct. 31, 2014 position	Nov. 01, 2014	Nov. 02, 2013	Nov. 01, 2014 segment	Nov. 02, 2013	Feb. 01, 2014	Feb. 02, 2013
Summary of Significant Accounting Policies [Line Items]
Net losses		$ 35,944,000	$ 14,910,000	$ 79,734,000	$ 10,842,000	$ 38,400,000
Negative cash flows				39,985,000	3,530,000	17,600,000
Cash and cash equivalents		19,058,000	30,084,000	19,058,000	30,084,000	38,772,000	42,279,000
Number of positions eliminated	78
Capitalized interest, less than $0.1 million		100,000		100,000
Income Taxes:
Net operating loss carry forwards		165,600,000		165,600,000
Effective negative income tax rate		0.20%		0.30%
Effective negative income tax rate, expected for remainder of fiscal year				0.30%
Other Comprehensive Income
Accumulated other comprehensive loss		0	(127,000)	0	(127,000)	(152,000)
Business Segment
Number of operating segments				1
Number of reportable segments				1
Letter of Credit [Member]
Summary of Significant Accounting Policies [Line Items]
Increase in outstanding letters of credit		$ 6,900,000